The nucleation mechanism of wire explosion

Abstract

This study deals with the nucleation mechanism of electric explosion of wires allowing estimation of wire parameters at the start of the explosion for a wide range of experimental conditions. We analyse the dependence of the limit value of the energy deposited during the initial resistive phase of heating of the wire on the parameters of the wire and circuit as well as the size distribution of metal particles formed on electrical explosion of the wire. We discuss the correspondence of these results with previously published experimental data.

Generation and Characterization of Zirconium Carbide Nanoparticles by Wire Explosion Process

“…A minimum energy to be deposited should be equal to number of moles times the latent heat of vaporization of the metal conductor. The energy required for vaporization of material W s , in general can be calculated as 11) …”

Generation and characterization of nano-tungsten particles formed by wire explosion process

“…Hence, the size of the nucleus formed is also low, as seen before, and hence the final mean size of the particles produced is low with helium as compared to that with nitrogen and argon ambiences. Tkachenko et al [22] adopted wire explosion technique for producing nano aluminium, copper and tungsten powder. They have concluded that the energy deposited is not only to conducting wire but also through the partially conducting vapour plasma formed around the conductor.…”

Generation and characterization of nano aluminium powder obtained through wire explosion process

“…where Q is the energy deposited, C s the specific heat capacity of the aluminium conductor, ΔT m = T m -T 0 , where T m is the melting temperature and T 0 the initial temperature, h m the melting heat, C f the heat capacity of the liquid metal, ΔT = T -T m , where T is the final temperature, and T m the melting temperature (Tkachenko et al 2004). It is clear from the magnetic pressure plot (figure 4) that the magnetic pressure exerted on the surface layer is zero.…”